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| Analysis of oil accumulation and fatty acid dynamic changes in Sapindus mukorossi fruits development |
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Received:July 14, 2025 Revised:March 15, 2026 Accepted:July 28, 2025
Published：July 20, 2026
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| DOI：10.19902/j.cnki.zgyz.1003-7969.250331 |
| KeyWord:Sapindus mukorossi oil accumulation pattern unsaturated fatty acid fruit development |
| FundProject:湖南省重大科技创新平台项目（2024PT0001）；长沙市科技计划“揭榜挂帅”重大科技项目（2022sfq53）；湖湘高层次人才聚集工程 (2023RC4013)；长沙市自然科学基金（kq2208098， kq2208099）；国家重点研发计划项目（2024YFB4205901）；湖南省林业科学院国家光皮树、山苍子良种基地项目 |
| Author Name | Affiliation | | ZHOU Xiao1,2, LI Peiwang1,3, XIAO Zhihong1, LI Changzhu1, YANG Yan1,
JIANG Lijuan2, SHENG Kezhai4, XIE Hongjun5,
CHEN Yunzhu1, CHEN Jingzhen1,3 | 1.State Key Laboratory of Woody Oil Resource Utilization, Hunan Academy of Forestry, Changsha 410004, China
2.College of Life Sciences and Technology, Central South University of Forestry and Technology, Changsha
410002, China
3.Key Laboratory of National Forestry and Grassland Administration on Utilization Science for
Southern Woody Oilseed, Hunan Academy of Forestry, Changsha 410004, China
4.Hunan Soapberry Agroforestry Development Co. , Ltd. , Changde 415000, Hunan, China
5.Hongjiang Forestry Bureau, Huaihua 418116, Hunan, China |
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| Abstract: |
| In order to provide references for the high utilization of Sapindus mukorossi, the patterns of oil accumulation and fatty acid dynamic changes in fruit development were studied with fruits collected at different developmental stages of 10-160 d after flowering (10-160 DAF) used as materials. Hundred-fresh fruit weight, and the oil contents in the pulp and kernel were determined. The fatty acid composition and contents of kernel oil and pulp oil at different developmental stages were determined by gas chromatography, and correlations among hundred-fresh fruit weight, oil content, and fatty acid contents were analyzed. The results showed that fruit development followed an S-shaped curve and could be divided into four stages: a slow growth stage (10-40 DAF), a rapid expansion stage (40-90 DAF), a color-change stage (90-130 DAF), and a maturity stage (130-160 DAF), with a total development period of approximately 130 d. Oil accumulation in the kernel and pulp exhibited an S-shaped and a double W-shaped pattern, respectively, reaching maximum at 130 DAF (30.65%) for kernel oil and 160 DAF (0.96%) for pulp oil. A total of 20 and 15 fatty acids were detected in kernel oil and pulp oil, respectively, and both were dominated by long-chain and unsaturated fatty acids. The relative contents of fatty acids in kernel oil changed in a regular manner. At fruit maturity, kernel oil was dominated by C18∶ 1 and C18∶ 3, whereas pulp oil contained the highest contents of C20∶ 2 and C18∶ 1. Correlation analysis indicated that kernel oil accumulation was closely associated with the fruit developmental process. Therefore, it is recommended to harvest Sapindus mukorossi fruit after 130 DAF to ensure optimal fruit weight and oil accumulation. |
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